the mordant in the gram stain procedure is
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Nursing Elites

NCLEX-RN

NCLEX RN Predictor Exam

1. In the Gram Stain procedure, which component acts as the mordant?

Correct answer: C

Rationale: In the Gram Stain procedure, the mordant is Gram's Iodine. The purpose of the mordant is to form a complex with the crystal violet, enhancing its ability to bind to the cell wall. Crystal violet is actually the primary stain used in the Gram Stain procedure to initially color all cells. Methyl alcohol is the decolorizer that removes the crystal violet from certain cell types. Safranin is the counterstain used to stain those cells that did not retain the crystal violet stain after the decolorization step.

2. A client is receiving high-dose brachytherapy as a form of cancer treatment. What type of teaching must the nurse include when educating this client about safety?

Correct answer: D

Rationale: A client undergoing high-dose brachytherapy has a radiation implant placed for cancer treatment. To ensure safety, the client should be in a private hospital room to prevent radiation exposure to others. Limiting visits from friends and family is necessary to prevent overexposure. Option A is incorrect as isolation under airborne precautions is not required for brachytherapy. Option B and C are the correct choices as they focus on minimizing radiation exposure to others, ensuring safety during treatment.

3. The abbreviation ac is defined as _____________.

Correct answer: A

Rationale: The correct answer is 'before the meal.' The abbreviation 'ac' is derived from the Latin term 'ante cibum,' which translates to 'before a meal.' Choices B, C, and D are incorrect because 'ac' does not refer to 'with the meal,' 'after the meal,' or 'ante corpis.' It specifically denotes something occurring before a meal, making option A the correct choice in this context.

4. Which of the following scenarios provides an example of a healthcare professional overcoming a barrier to communication?

Correct answer: B

Rationale: Overcoming barriers to communication in healthcare involves utilizing methods of communication that are accessible and understandable to the recipient. In the scenario provided, writing down instructions for a patient who is hearing impaired is an effective way to ensure clear communication and overcome the obstacle of hearing impairment. This method allows the patient to visually comprehend the information provided. Choice A is incorrect because using a visual aid for a visually impaired patient, not a hearing-impaired patient, would be more appropriate. Choice C is incorrect as raising one's voice does not address the language barrier effectively and may not enhance understanding. Choice D is incorrect as using complex medical terms with a minor may lead to confusion and hinder effective communication.

5. The most accurate reading for a temperature is done:

Correct answer: B

Rationale: Aural readings are done through the ear canal. The tympanic membrane shares a blood supply with the hypothalamus, the brain area that regulates body temperature. Taking the temperature aurally through a clean canal ensures an accurate reading. Choice A (Orally) is not the most accurate method for temperature measurement as it can be affected by external factors like drinking hot or cold liquids. Choice C (Rectally) is invasive and less practical for routine temperature monitoring. Choice D (Axially) is not a standard method for temperature measurement and may not provide accurate results.

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